Added tests

src/behaviour/default_response.rs

@@ -34,7 +34,7 @@ mod tests {
 
         let mut entity = Entity::new("TestEntity");
 
-        entity.append_behaviour(default_response);
+        entity.append_behaviour(default_response.clone());
 
         assert_eq!(entity.send_event(Event::Nothing),
                    Event::Tell(String::from("Responsy!")));

src/entity.rs

@@ -64,4 +64,28 @@ mod tests {
 
         assert_eq!(res, Event::Tell("Response!".to_owned()));
     }
+
+    #[test]
+    fn clone_entity() {
+        let entity = Entity::new("TestSubject");
+
+        let entity_clone = entity.clone();
+
+        assert_eq!(entity.name, entity_clone.name);
+    }
+
+    #[test]
+    fn chained_behaviour() {
+        let default_response_one = DefaultResponse::new("Response 1!");
+        let default_response_two = DefaultResponse::new("Response 2!");
+
+        let mut entity = Entity::new("TestSubject");
+
+        entity.append_behaviour(default_response_one);
+        entity.append_behaviour(default_response_two);
+
+        let res = entity.send_event(Event::Nothing);
+
+        assert_eq!(res, Event::Tell("Response 2!".to_owned()));
+    }
 }